JP5748625B2 - Heat exchanger manufacturing method and manufacturing apparatus - Google Patents

Description

  The present invention relates to a method and an apparatus for manufacturing a heat exchanger in which a plurality of plate-shaped fins are mounted on the outer peripheral surface of a tube through which a fluid such as a refrigerant flows.

  As is well known, a heat exchanger used in an air conditioner or the like has a flat cross section and a tube as a refrigerant tube through which a fluid such as a refrigerant flows, and a plurality of tubes mounted on the outer peripheral surface of the tube. And a plate-like fin for heat exchange. Such a heat exchanger is usually referred to as a fin-and-tube heat exchanger, but in the following description, it is simply referred to as a heat exchanger. Conventionally, as a method of manufacturing a heat exchanger, after laminating a plurality of plate-like heat exchange fins provided with insertion holes at appropriate intervals, a tube having a flat cross section is inserted into the tube insertion hole. The method of inserting in is used (for example, refer patent document 1, 2).

Japanese Patent Laid-Open No. 10-89870 Japanese Utility Model Publication No. 5-90173

  In the above-described conventional heat exchanger manufacturing method and manufacturing equipment, a plurality of plate-like fins are arranged in advance with a predetermined pitch secured, and the cross section is formed flat in the insertion hole provided in the fin. The refrigerant pipe (hereinafter referred to as a tube) is inserted, but it is necessary to arrange a plurality of fins with a predetermined pitch, which increases manufacturing time. In addition, when the tube is inserted into the fin insertion hole, the fins are deformed by the force applied to the fins, or the pitch of the plurality of fins arranged is disturbed, the ventilation resistance is increased, and the performance of the heat exchanger is reduced.

  Therefore, in order to prevent the above-described deformation of the fins and disturbance of the pitch of the fins, it is necessary to use a spacer jig between the fins. In this case, depending on the heat exchanger model, one heat exchanger is used. In some cases, the fin pitch is not the same due to the difference in the number of fins used. Therefore, in order to manufacture heat exchangers with different fin pitches, the number of parts increases, the setup change time of manufacturing increases, and further, the maintenance cost of the spacer jig to cope with different fin pitches is enormous. Become.

  Furthermore, the width of the insertion hole provided in the fin is narrower than the width of the tube so as not to create a gap between the tube and the outer surface of the tube. Therefore, the insertion hole of the fin is deformed by the tube and a gap is formed between the fin and the outer surface of the tube. In order to manufacture a high-performance heat exchanger, heat conduction between the fins and the tubes is required. Therefore, the fins and tubes must be fixed to a method other than a metal brazing method with good heat conductivity. The difficulty of fixing fins and tubes is difficult.

  The present invention has been made to solve the problems in the conventional heat exchanger manufacturing method and manufacturing apparatus as described above, and is capable of manufacturing a high-performance heat exchanger in a short time. It aims at obtaining the manufacturing method and manufacturing apparatus of an exchanger.

In the heat exchanger manufacturing method according to the present invention, a plurality of fins are mounted on the outer peripheral surface of a tube through which a fluid flows inside at a predetermined interval in the length direction of the tube. A method of moving a fin to be attached to the tube and the tube relative to each other in a length direction of the tube; a fin attaching step of attaching the fin to the tube one by one; A tube restraining step for restraining the tube so as to restrict the position in the width direction of the tube at least during execution of the fin mounting step, and the fin has a tube insertion groove into which the tube is inserted, The fin mounting step is characterized in that the tube is inserted into the tube insertion groove while the fin moves circularly .

A heat exchanger manufacturing apparatus according to the present invention includes a tube for circulating a fluid therein, and a fin mounted on the tube by fitting a tube insertion groove to the outer peripheral surface of the tube. A fin holding part capable of holding a fin to be attached to the tube, a tube holding part capable of holding the tube to which the fin is to be attached, the fin holding part and the tube The fin holding unit, comprising: a driving unit that relatively moves the holding unit in the length direction of the held tube; and a tube restraining unit that restrains the tube and can regulate a position in the width direction of the tube. The fin is attached to the outer peripheral surface of the tube by holding the fin and fitting the tube insertion groove into the tube, and corresponds to the movement. Be one mounted at predetermined intervals a plurality of fins on the outer peripheral surface of the tube by sequentially performing the mounting, circular motion as the tube while the fin is circular motion is inserted into the tube insertion groove The tube restraining portion restrains the tube so as to restrict the position in the width direction of the tube at least when the fin is attached to the tube.

According to the method of manufacturing a heat exchanger according to the present invention, deformation of the full fin, without disturbance or the like of the fin pitch occurs. Moreover, it is possible to and quickly producing a heat exchanger in a low manufacturing cost. Further, in the fin mounting step, a remarkable effect that the deformation of the fin can be further reduced can be obtained.

Further, according to the manufacturing apparatus of a heat exchanger according to the present invention, off mounting position of the fin is stabilized, it is possible to prevent the disturbance of the deformation or the fin pitch of the fins, than metal brazing method of fixing the fin and the tube A material having a low thermal conductivity can be used, and a heat exchanger can be quickly manufactured at a low manufacturing cost. Further, in the fin mounting step, a remarkable effect that the deformation of the fin can be further reduced can be obtained.

It is a perspective view which shows the heat exchanger using the flat tube manufactured with the manufacturing method and manufacturing apparatus of this invention. It is a top view which shows the fin in the heat exchanger manufactured with the manufacturing method and manufacturing apparatus of the heat exchanger of this invention. It is a conceptual diagram which shows the manufacturing method and manufacturing apparatus of the heat exchanger by Embodiment 1 of this invention. It is explanatory drawing which shows the specific structure of the manufacturing apparatus of the heat exchanger by Embodiment 1 of this invention. It is explanatory drawing which shows a part of manufacturing apparatus of the heat exchanger by Embodiment 1 of this invention. It is explanatory drawing of the rotary joint in the manufacturing apparatus of the heat exchanger by Embodiment 1 of this invention.

It is explanatory drawing which shows a part of manufacturing apparatus of the heat exchanger by Embodiment 1 of this invention. It is explanatory drawing which shows a part of manufacturing apparatus of the heat exchanger by Embodiment 1 of this invention. It is explanatory drawing which shows a part of manufacturing apparatus of the heat exchanger by Embodiment 1 of this invention. It is explanatory drawing which shows operation | movement of the manufacturing apparatus of the heat exchanger by Embodiment 1 of this invention. It is explanatory drawing which shows operation | movement of the manufacturing apparatus of the heat exchanger by Embodiment 1 of this invention. It is explanatory drawing which shows a part of manufacturing method and manufacturing apparatus of the heat exchanger by Embodiment 2 of this invention.

It is explanatory drawing which shows a part of manufacturing apparatus of the heat exchanger by Embodiment 3 of this invention. It is explanatory drawing which shows a part of manufacturing apparatus of the heat exchanger by Embodiment 4 of this invention. It is a conceptual diagram which shows a part of manufacturing method and manufacturing apparatus of the heat exchanger by Embodiment 6 of this invention. It is explanatory drawing which shows operation | movement of the manufacturing apparatus of the heat exchanger by Embodiment 6 of this invention. It is explanatory drawing which shows operation | movement of the manufacturing apparatus of the heat exchanger by Embodiment 6 of this invention. It is a conceptual diagram which shows a part of manufacturing method and manufacturing apparatus of the heat exchanger by the manufacturing apparatus of the heat exchanger by Embodiment 7 of this invention.

It is a conceptual diagram which shows a part of manufacturing method and manufacturing apparatus of a heat exchanger by the manufacturing apparatus of the heat exchanger by Embodiment 8 of this invention. It is a conceptual diagram which shows a part of manufacturing method and manufacturing apparatus of the heat exchanger by the manufacturing apparatus of the heat exchanger by Embodiment 9 of this invention.

  FIG. 1 is a perspective view showing a heat exchanger using a tube having a flat cross section manufactured by the manufacturing method and manufacturing apparatus of the present invention. In FIG. 1, a heat exchanger 100 is a fin-and-tube heat exchanger, and includes a tube 1 and a fin 2. The tube 1 is inserted into a tube insertion groove 21 provided in the fin 2. Are joined together. A large number of fins 2 are stacked in parallel at a fin pitch that is flat and has a constant interval. A plurality of tubes 1 having a flat cross section are arranged in parallel, and a fluid such as water or a refrigerant flows through each of the tubes 1.

FIG. 2 is a plan view showing fins in the heat exchanger manufactured by the method and apparatus for manufacturing a heat exchanger according to the present invention. As shown in FIG. 2, substantially U-shaped tube insertion grooves 21 are formed at predetermined intervals in the fin 2, and slits 22 are formed on the respective surfaces 220 defined by the tube insertion grooves 21. 23 is formed. And on the same surface side of the fin 2, a fin collar (not shown) for bringing the tube 1 and the fin 2 into close contact with each other along the edge of each tube insertion groove 21 rises vertically. Is formed. The slits 22 and 23 and the fin collar protrude in the same direction with respect to the surface of the fin 2.

  As described above, the tube 1 has a flat shape, and is configured such that a fluid such as water or a refrigerant flows therein. By making the cross section of the tube 1 flat, the amount of refrigerant in the tube can be increased without increasing the airflow resistance of the air flowing on the outer surface side of the tube 1. However, a heat exchanger having sufficient performance can be obtained.

  The fin 2 is arrange | positioned ranging over the several tube 1 arranged in parallel, and when the tube 1 is inserted in each tube insertion groove | channel 21, it mounts | wears with the outer peripheral surface of the some tube 1. FIG. As shown in FIG. 1, a plurality of fins 2 formed in the same shape are mounted on the outer peripheral surfaces of a plurality of tubes 1 at a predetermined fin pitch. The number of fins 2 is generally several hundred or more in a heat exchanger used in an air conditioner. The heat exchanger configured as described above cools the atmosphere by removing the heat of evaporation from the atmosphere via the tube 1 and the plurality of fins 2 when the fluid flowing in each tube 1 is vaporized. .

  As the fin material for forming the above-described fin 2, it is usually formed in an aluminum thin plate wound around a reel in a hoop shape having a thickness of “0.1” to “0.7” [mm], or in a sheet shape. Fin material is used. The fins 2 are formed one by one by sequentially separating a large number of fins formed into a predetermined shape from a hoop-like or sheet-like fin material using a progressive press device. In addition, the fin 2 may be formed for every sheet | seat by apparatuses other than a progressive press apparatus.

Embodiment 1 FIG.
Next, a method and apparatus for manufacturing a heat exchanger according to Embodiment 1 of the present invention will be described. FIG. 3 is a conceptual diagram showing a heat exchanger manufacturing method and manufacturing apparatus according to Embodiment 1 of the present invention. In FIG. 3, the manufacturing method of the heat exchanger according to Embodiment 1 of the present invention has a plurality of fins 2 on the outer peripheral surface of a tube 1 through which a fluid is circulated. A method of manufacturing a heat exchanger that is mounted via an interval, wherein the fin 2 to be mounted on the tube 1 and the tube 1 are moved relative to each other in the length direction of the tube 1; A fin mounting step of mounting the fins 2 on the tube 1 one by one, and a tube restraining step of restraining the tube so as to restrict a position in the width direction of the tube 1 at least during execution of the fin mounting step. It has.

  More specifically, a plurality of the tubes 1 are juxtaposed at a predetermined interval in the width direction of the tubes 1, and the fins 2 are provided with a plurality of tube insertion grooves 21 respectively corresponding to the plurality of juxtaposed tubes 1. In the fin mounting step, the plurality of tubes 1 respectively corresponding to the plurality of tube insertion grooves 21 are inserted at the same time, and the fins 2 are mounted across the plurality of tubes 1. The plurality of tubes 1 juxtaposed are constrained, and the plurality of tubes 1 are juxtaposed while maintaining the predetermined interval. The tube restraining process will be described later.

  Next, the manufacturing method and manufacturing apparatus of the heat exchanger according to Embodiment 1 of the present invention will be described in more detail. In FIG. 3, the drum 122 rotates around the axis X in the direction of arrow A, that is, in the clockwise direction in FIG. Eight fin holding portions 121 are provided on the peripheral portion of the drum 122 at predetermined intervals in the circumferential direction of the drum 122.

  Each of the fin holding portions 121 performs a circular motion around the axis X as the drum 122 rotates. When the fin holding portion 121 reaches the top in the vertical direction, the fin holding portion 121 receives and holds one fin 2, and When the bottom of the direction is reached, the retained fin 2 is attached to the outer peripheral surface of the tube 1.

  As will be described later, the fin 2 is held by the fin holding portion 121 by, for example, so-called vacuum suction, in which the fin 2 is sucked using air suction. The fin holding part 121 is connected to a cam follower 124 described later.

  In addition, the standing angle with respect to the drum 122 of each fin holding | maintenance part 121 in FIG. 3 is shown typically.

  The tube 1 is held so that the major axis direction of the cross section is vertical, and moves in the direction of arrow B at a predetermined speed as will be described later. This movement of the tube corresponds to a moving process in which the fin 2 to be attached to the tube 1 and the tube 1 are moved relatively in the length direction of the tube 1. The tube 1 may be fixed and the drum 122 may be moved in the direction opposite to the arrow B. This will also be described later.

  As described above, the drum 122 is rotated at a predetermined speed in the direction of the arrow A, and the eight fin holding portions 121 are sequentially rotated every [1/8] rotation of the drum 122, that is, at predetermined time intervals. 3 reaches the lowest position of the drum 122 shown in FIG. 3 and the fins 2 are attached to the outer peripheral surface of the tube 1 during the stop period. The attachment of the fins to the tube by this operation corresponds to the fin attachment process of attaching the fins 2 to the tube 1 one by one. The tube 1 to which the fin 2 is attached moves at a predetermined speed in the direction of the arrow B by a distance corresponding to the fin pitch, stops again, and the next fin 2 is attached. Accordingly, the fin pitch, which is the distance between the fins 2 that are sequentially mounted on the outer peripheral surface of the tube 1 by the fin holding part 121, is always kept constant.

  According to the method for manufacturing a heat exchanger according to Embodiment 1 of the present invention, the fin pitch can be arbitrarily set by changing the moving speed of the tube 1 in the B direction, changing the rotational speed of the drum 122, or both. Can be set.

  FIG. 4 is an explanatory view showing a specific configuration of the heat exchanger manufacturing apparatus according to Embodiment 1 of the present invention. For convenience of explanation, FIG. 4 shows only one of the eight fin holding portions 121 shown in FIG. 3, but the other seven fin holding portions 121 are the fins shown in FIG. The configuration is the same as that of the holding unit 121.

  In the heat exchanger manufacturing apparatus 120 shown in FIG. 4, the pair of drums 122 arranged at intervals is fixed to a shaft 126 whose central part is rotatably supported by a pair of support parts 174. And rotates as the shaft 126 rotates. In the first embodiment, the shaft 126 and the drum 122 rotate clockwise as viewed from the right direction in FIG. The shaft 126 is connected to a motor 128 via a coupling 127 and is driven by the motor 128 to rotate at a predetermined speed.

  As for the fin holding | maintenance part 121, the rotating shaft 129 is rotatably supported by each of a pair of drums 122 via a bearing. The pair of cam followers 124 are located outside the respective drums 122 and are connected to the end portions of the rotation shafts 129 of the fin holding portions 121 via connecting plates 1241. A pair of cam members 123 formed in the same shape are disposed outside the respective drums 122 and are fixed by the support portions 174 and always stationary.

  When the fin holding part 121 reaches the lowermost part in the substantially vertical direction as the drum 122 rotates, the cam follower 124 comes into contact with a later-described raised surface provided on the peripheral surface of the cam member 123, and then the drum 122. The fin holding portion 121 is rotated by a predetermined angle in the counterclockwise direction when viewed from the right in FIG.

  One end of the torsion spring 125 is fixed to the drum 122 and the other end is fixed to the fin holding portion 121. The torsion spring 125 constantly biases the fin holding portion 121 clockwise as viewed from the right in FIG. Accordingly, the cam follower 124 is pressed against the raised surface of the cam member 123 by the biasing force of the torsion spring 125, and rolls on the circumferential surface of the raised surface while the drum 122 rotates by a predetermined angle.

  By using the cam member 123 and the cam follower 124, the timing of performing the movement of the fin holding portion 121 to dodge the fins 2 inserted into the tube 1 as described later is reduced. An exchange can be obtained.

  The rotary joint 156 controls connection or disconnection of a vacuum path composed of a pipe 1551 connected to a vacuum pump, which will be described later, and a pipe 1552 connected to the fin holding unit 121 according to the rotation angle of the drum 122.

  FIG. 5 is an explanatory view showing a part of the heat exchanger manufacturing apparatus according to Embodiment 1 of the present invention, and includes a motor 128, a coupling 127, a drum 122, a fin holding portion 121, a cam member 123, a cam follower 124, and a twist. Only the spring 125 is extracted from FIG. 4 so that the mutual relationship between these parts can be easily understood.

  Next, the configuration of the rotary joint 156 described above will be described. 6A and 6B are explanatory views of a rotary joint in the heat exchanger manufacturing apparatus according to Embodiment 1 of the present invention. FIG. 6A is an explanatory view showing an axial section of the rotary joint, and FIG. Explanatory drawing which shows the plane of a 1st partition plate, (c) is explanatory drawing which shows the plane of the 2nd partition plate mentioned later.

  In FIG. 6A, the fixing portion 163 of the rotary joint 156 is directly or indirectly fixed to the aforementioned support portion 174, has a substantially U-shaped cross section, and is a through-hole provided in the center portion. A through hole 1633 is provided in the lower portion in the vertical direction with respect to the hole 1631. The end of the shaft 126 driven by the motor 128 is inserted into the through hole 1631 of the fixed portion 163. The through hole 1633 is connected to a pipe 1551 connected to a vacuum pump via a joint 1553. The sealing member 1632 is inserted between the inner peripheral surface of the through hole 1631 of the fixing portion 163 and the outer peripheral surface of the shaft 126, and hermetically seals the inside and the outside of the fixing portion 163.

  The first partition plate 164 has an outer peripheral surface fixed to the inner peripheral surface of the fixing portion 163, and a through hole 1641 through which the shaft 126 passes is provided in the central portion. The sealing member 1642 is inserted between the inner peripheral surface of the through hole 1641 of the first partition plate 164 and the outer peripheral surface of the shaft 126, and hermetically seals the inside and the outside of the fixed portion 163. As shown in FIG. 6B, the first partition plate 164 has a through-hole 1643 extending in an arc shape in the vicinity of the outer peripheral edge thereof. The through-hole 1643 extends in the counterclockwise direction within an angle range of approximately 250 degrees from the position of the lowest vertical portion of the first partition plate 164.

  The rotating part 161 is fixed to the shaft 126 and rotates together with the shaft 126. A through hole 1611 provided on the center side of the rotating part 161 is connected to a pipe 1552 connected to the fin holding part 121 via a joint 1554.

  The second partition plate 162 is fixed to the rotating part 161 and rotates integrally with the shaft 126 and the rotating part 161. As shown in FIG. 6C, the second partition plate 162 includes eight through-holes 1621 extending from the vicinity of the center portion to the vicinity of the outer peripheral edge portion. These through-holes 1621 are formed radially at equal intervals, and the respective set positions correspond to the set positions of the eight fin holding portions 121 shown in FIG.

One surface of the second partition plate 162 is in contact with one surface of the first partition plate 164, and the second partition plate 162 rotates so that the surfaces slide while maintaining airtightness. Move. The second partition plate 162 is made of resin for buffering friction between the inner peripheral surface of the fixed portion 163 and the first partition plate 164.

  When the through-hole 1621 provided in the second partition plate 162 and the arc-shaped through-hole 1643 of the first partition plate 164 are at least partially overlapped, the pipe 1551 connected to the vacuum pump is , The inside of the joint 1553, the fixing portion 163, the through long hole 1643 of the first partition plate 164, the through long hole 1621 of the second partition plate 162, and the pipe connected to the fin holding portion 121 via the joint 1554 1552.

  On the other hand, when the through-hole 1621 provided in the second partition plate 162 and the arc-shaped through-hole 1643 of the first partition plate 164 are not overlapped at all, the pipe 1551 and the pipe 1552 are It is blocked by the first partition plate 164.

  When the drum 122 rotates, the piping 1552 and the through long hole 1621 of the second partition plate 162 move in the circumferential direction, but the through long hole 1643 of the first partition plate 164 does not move. Accordingly, the positions of these through holes are shifted and the through holes 1621 and the through holes 1643 are blocked in a certain phase section. By setting the position of the through hole 1643 so that the vacuum path is interrupted when the fin holding part 121 reaches the fin insertion position, the fin mounting position of the fin 2 is shifted by the suction force after the fin is inserted into the tube 1. To prevent that.

  FIG. 7 is an explanatory view showing a part of the heat exchanger manufacturing apparatus according to Embodiment 1 of the present invention, and shows a vacuum path from the vacuum pump 157 to the fin holding part 121 via the pipes 1551 and 1552. . The fin holding portion 121 includes U-shaped grooves 151 as eight groove portions formed at equal intervals, and seven suction holes 154 that open on one surface of the fin holding portion 121 between the U-shaped grooves 151. And an internal passage 152 that is formed inside the fin holding portion 121 and communicates with each of the aforementioned suction holes 154 and the joint 1555.

  As described above, when the through long hole 1643 in the first partition plate 164 and the through long hole 1621 overlap the second partition plate 162 in the first position of the rotary joint 156, the pipe 1551 is operated by the operation of the vacuum pump 157. The air is sucked into the vacuum pump 157 from the respective suction holes 154 through the joint 1553, the rotary joint 156, the pipe 1552, the joint 1555, and the internal passage 152 of the fin holding portion 121.

  The fin 2 is sucked and held in the fin holding portion 121 by sucking air from the suction hole 154 of the fin holding portion 121, and the connection between the pipe 1551 and the pipe 1552 is cut off by the rotary joint 156 as described above. When air is no longer drawn from the suction hole 154, the air is released from being held by the fin holding portion 121.

  The fin 2 is held by the fin holding portion 121 such that the eight tube insertion grooves 21 overlap the U-shaped groove 151 of the fin holding portion 121. The width dimension of the U-shaped groove 151 is slightly larger than the width dimension of the tube insertion groove 21 of the fin 2.

  Next, the stage part 140 which comprises the tube holding part shown in above-mentioned FIG. 4 is demonstrated. In FIG. 4, the first support member 1751 is movably mounted on a pair of fixed linear guides 141. The second support member 1752 is supported on the first support member 1751 via the four air cylinders 144. The plurality of tubes 1 are placed on the upper surface of the second support member 1752 so that the length direction thereof coincides with the direction in which the linear guide 141 extends. Moreover, these tubes 1 are mounted so that the major axis of the cross section thereof coincides with the vertical direction.

The ball screw 142 is connected to the output shaft of the motor 143 and is driven by the motor 143 to rotate intermittently at a predetermined speed in a predetermined direction. The first support member 1751 is connected to the ball screw 142 via the nut member 1241, and moves intermittently at a predetermined speed in the left direction when viewed from the right direction in the drawing by the rotation of the ball screw 142 in the predetermined direction. Is possible. The ball screw 142, the nut member 1421, and the motor 143 constitute a drive unit that relatively moves the fin holding unit 121 and the tube holding unit 140 in the length direction of the held tube 1. The aforementioned air cylinder 144 adjusts the vertical height of the second support member 1752.

  FIG. 8 is an explanatory view showing a part of the heat exchanger manufacturing apparatus according to Embodiment 1 of the present invention, and shows the stage portion 140 extracted from FIG.

  In FIG. 4, the height of the second support member 1752 in the stage portion 140 is shown as a height at which the tube 1 is not inserted into the U-shaped groove 151 of the fin holding portion 121 positioned at the lowest in the vertical direction. However, when the fin 2 is inserted into the tube 1, the second support member 1752 of the stage portion 14 is driven by the air cylinder 144 to a height at which the tube 1 is inserted into the U-shaped groove of the fin holding portion 121. To be moved.

  When the heat exchanger manufacturing apparatus 120 is in operation, the stage unit 140 moves the tube 1 intermittently by a length corresponding to the fin pitch in the length direction with respect to the fin 2 to be mounted. At the time of stopping while the tube 1 moves intermittently, the fin 2 to be attached is attached to the outer peripheral surface of the tube 1. Therefore, heat exchangers with various fin pitches can be manufactured by changing the horizontal movement distance of the stage 140.

  Next, the tube restraint portion in the heat exchanger manufacturing apparatus according to Embodiment 1 of the present invention will be described. FIG. 9 is an explanatory view showing a part of the heat exchanger manufacturing apparatus according to Embodiment 1 of the present invention, and shows a tube restraining portion. In FIG. 9, a fin restraining portion 401 includes a base plate 403 provided with a plurality of restraining pins 402 and holes (not shown) for fixing these restraining pins 402 at an equal pitch, and a base plate. A pair of first guides 405 fixed to one side portion of the back surface of 403 with a gap therebetween, and configured in the same manner as the first guide 405 with a gap to the other side portion of the back surface of the base plate 403. A pair of fixed second guides (not shown) and a pair disposed corresponding to the back surface of the base plate 403 and slidably abutting the inner side surfaces of the first guide 25 and the second guide The guide rail 404 is configured.

  The plurality of constraining pins 402 are partially inserted and fixed in holes provided in a row on one side and the other side of the surface of the base plate 403. The two restraining pins 402 adjacent to each other on one side and the other side of the surface of the base plate 403 regulate the horizontal position on the surface of the base plate 403 of the tube 1. Thereby, the plurality of chives 1 are arranged at an equal pitch in the width direction of the tube 1.

The interval between the restraint pins 402 located on both sides of the tube 1 is set slightly wider than the width of the tube 1, and the tube restraint portions 401 are easily attached to and detached from the plurality of tubes 1.

  FIG. 9 shows a case where the constraint pins 402 are arranged in two rows and the pins located on both sides of the plurality of tubes 1 are set in the same row, but the constraint pins 402 are arranged in three rows. They may be arranged as described above, or the constraining pins located on both sides of the plurality of tubes 1 may be arranged in a zigzag shape, for example, without forming the same row.

  The base plate 403 slides on the surfaces of the pair of guide rails 404 via the first guide 405 and the second guide, and can freely move horizontally in the width direction of the plurality of tubes 1. Accordingly, the position of the base plate 403 in the horizontal direction can be set corresponding to the setting position of the plurality of tubes 1 in the width direction.

  FIG. 11 is an explanatory view showing the operation of the heat exchanger manufacturing apparatus according to Embodiment 1 of the present invention. As shown in FIG. 11, the tube restraint portion 401 is installed behind the fin insertion position in the traveling direction of the tube 1. The tube restraining portion 401 does not interfere with the operation of the fin holding portion 121, and the fin holding portion 121 can always avoid the moving fin holding portion 121 even if the fin holding portion 121 changes its position to 121a, 121b, 121c. Installed.

  The installation position of the tube restraining portion 401 may be always fixed relatively with respect to the installation position of the drum 122, or the tube restraining portion 401 is removed from the tube 1 every time the fin 2 is attached to the tube 1. It may be detached and moved downward in the figure, and moved again upward in the figure before the timing of attaching the next fin 2 to the tube 1 to repeat the operation of restraining the plurality of tubes 1. These fin restraining operations correspond to a tube restraining step of restraining the tube so as to restrict the position in the width direction of the tube 1 at least during execution of the fin mounting step.

  Next, the operation of the heat exchanger manufacturing method according to Embodiment 1 of the present invention configured as described above will be described. FIG. 10 is an explanatory view for explaining the operation of the heat exchanger manufacturing apparatus according to Embodiment 1 of the present invention. FIG. 10 (a) is a state immediately before the fin 2 is mounted on the outer peripheral surface of the tube 1, and FIG. Is the state when the fin 2 is mounted on the outer peripheral surface of the tube 1, (c) is the state immediately after mounting the fin 2 on the outer peripheral surface of the tube 1, and (d) is a further time elapsed from the state of (c). Each state is shown. Note that FIG. 10 shows only one of the eight fin holding portions 12 for the convenience of explanation, and shows the operation state.

  When the fin holding portion 121 is positioned at the uppermost portion in the vertical direction of the drum 122, as described above, the through long hole 1621 of the second partition plate 162 corresponding to the fin holding portion 121 is provided in the first partition. The pipe 1551 and the pipe 1552 are in a connected state because they overlap with the through-hole 1643 of the plate 164, and the suction hole 154 of the fin holding portion 121 sucks air.

  One fin 2 supplied from a fin supply part (not shown) is supplied to the fin holding part 121 at the uppermost position of the drum 122, and the tube insertion groove 21 of the fin 2 is the U of the fin holding part. The fin 2 is attracted and held by the fin holding portion 121 in a state of being superimposed on the character groove 151. As the drum 122 rotates, the eight fin holders 121 sequentially reach the uppermost part of the drum 122 at predetermined time intervals, and the fins 2 are supplied one by one and held in order. With the rotation of 122, the position shown in FIG. 10 (a) is reached by the clockwise circular motion of FIG.

When the fin holding part 121 holding the fin 2 reaches the position shown in FIG. 10A, a part of the plurality of tubes 1 is in the tube insertion groove 21 of the fin 2 held by the fin holding part 12, and the fin The state is fitted into the U-shaped groove 151 of the holding part 121. At this time, the cam follower 124 of the fin holding portion 121 is in a position in contact with or not in contact with the flat surface 1231 of the cam member 123 and is in an upright state with respect to the peripheral surface of the drum 122.

  Next, when the fin holding portion 121 reaches the position shown in FIG. 10B as the drum 122 rotates, the cam follower 124 of the fin holding portion 12 reaches the raised surface 1232 of the cam member 123 and the fin holding portion. 12 is in a state where the width direction of the fin 2 substantially coincides with the vertical direction, the tube 1 is completely fitted in the tube insertion groove 21, and the fin 2 is placed on the outer peripheral surface of the tube 1. Installed.

  At this time, the through long hole 1621 of the second partition plate 162 of the rotary joint 156 partially overlaps the through long hole 1643 of the first partition plate 164 as shown in FIG. Although the pipe 1551 and the pipe 1552 are connected, the drum 122 further rotates in the clockwise direction from that state, so that the through long hole 1621 does not overlap the through long hole 1643. The connection between 1551 and the pipe 1552 is cut off, and the fin holding portion 121 ends the holding of the fin 2.

  When the drum 122 further rotates clockwise from the state of FIG. 10B, the fin follower 124 is pushed up with the cam follower 124 coming into contact with the raised surface 1232 of the cam member 123, and the fin retainer 121 By rotating in the counterclockwise direction of FIG. 10 about the rotation shaft 129, the fin 2 mounted on the outer peripheral surface of the tube 1 is separated as shown in FIG.

  When the drum 122 further rotates and the fin holding portion 121 reaches the position shown in FIG. 10 (d), the fin holding portion 121 further moves away from the fin 2 attached to the tube 1, and thereafter As the drum 122 rotates, the drum 122 moves toward the top of the drum 122. Then, when the top of the drum 122 is reached again, new fins 2 are again supplied by the fin supply unit and held.

  The explanatory view of FIG. 11 shows the operation of the fin holding part 121 by the cam member 123 and the cam follower 124 as seen from the apparatus axial direction. The installation range of the tube restraint portion 401 is indicated by hatching as described above. When the cam follower 124 traces the circumferential surface of the cam member 123 in the direction of the arrow 175 as the drum 122 rotates, the angle of the fin holding portion 121 with respect to the drum 122 according to the curve of the circumferential surface of the cam member 123 is 121a → It changes from 121b to 121c. Thus, by changing the radius of the cam member 123, the fin holding part 121 can be operated so as to dodge the fin 2 inserted into the tube 1.

  As shown in FIG. 3 described above, the drum 122 is provided with eight fin holding portions 121 in the first embodiment, and each fin holding portion 121 sequentially performs the operations described with reference to FIG. This process is repeated until a predetermined number of fins are mounted on the tube 1 at a predetermined fin pitch. As a result, the heat exchanger shown in FIG. 1 is manufactured.

  The restraining pin 402 of the tube restraining portion 401 restrains the tube 1 from both sides while the fin 2 is inserted into the tube 1. Therefore, the fins 2 can be inserted into the tube 1 without causing displacement or deformation, and a high-performance heat exchanger with a uniform fin pitch can be obtained.

Further, as described above, the base plate 403 of the tube restraining portion 401 slides on the surfaces of the pair of guide rails 404 via the first guide 405 and the second guide, and in the width direction of the plurality of tubes 1. Since the base plate 403 can be horizontally moved freely, the position of the base plate 403 in the horizontal direction is corrected according to the shift in the position of the plurality of tubes 1 in the width direction. The displacement of the position of the tube 1 at the time of insertion can be prevented.

  As described above, according to the method and apparatus for manufacturing a heat exchanger according to Embodiment 1 of the present invention, the tube is moved intermittently at a predetermined speed in the length direction with respect to the fin to be mounted, Since the fins to be attached to the outer peripheral surface of the tube are attached at predetermined time intervals while the tube is stopped, the fins can be securely inserted into the tube one by one at a predetermined position, and the spacer jig can be attached. A heat exchanger without fin deformation and pitch disturbance can be manufactured at a desired pitch without using it.

  Moreover, the heat exchanger corresponding to various fin pitches can be easily manufactured by changing the amount of stage movement.

  Furthermore, after the fin holding part inserts the fin, it is possible to dodge the fin without changing the operation direction, and the fin can be continuously inserted into the tube. This can be realized with a simple configuration.

  In addition, the fin holding part can grip the fin by vacuum suction, and the vacuum suction can be stopped at the fin insertion position by the partition plate in the vacuum path to release the fin. At this time, it is possible to avoid the fin pitch from being disturbed by the movement of the fin position after insertion due to the suction force.

  Further, while the fin is inserted into the tube, the restraining pin of the tube restraining portion restrains the tube from both sides thereof. Therefore, the fin can be inserted into the tube without causing positional displacement or deformation, and a high-performance heat exchanger with a uniform fin pitch can be obtained. In addition, since the gap between the fin and the outer surface of the tube can be reduced, a material having a low thermal conductivity other than metal brazing can be used for the fixing method of the fin and the tube.

Embodiment 2. FIG.
In the heat exchanger manufacturing apparatus according to the first embodiment described above, the stage on which the tube is placed is moved. However, in the second embodiment of the present invention, the drum is fixed and supports the fin holding portion. The side is moved.

  FIG. 12 is an explanatory view showing a part of a heat exchanger manufacturing apparatus according to Embodiment 2 of the present invention. In FIG. 11, a pair of support portions 1741 support a motor 128, a coupling 127, a drum 122, a fin holding portion 121, a cam member 123, a cam follower 124, and the like, and a pair of linear guides via an air cylinder 1441. 1411. The support portion 1741 moves intermittently on the linear guide 1411 at a predetermined speed by a motor (not shown).

  On the other hand, a table 140 (not shown) on which the tube 1 is placed is fixed so as not to move. Other configurations are the same as those of the first embodiment, and the tube restraining portion 401 shown in FIG. 9 is provided.

  According to the heat exchanger manufacturing apparatus according to Embodiment 2 of the present invention, fins can be inserted into the tube one by one at a predetermined position, so that there is no fin deformation and pitch disturbance at a desired pitch without using a spacer jig. The heat exchanger can be manufactured, and furthermore, while the fin is inserted into the tube, the restraining pin of the tube restraining portion restrains the tube from both sides, so that the fin is not displaced or deformed. It is possible to obtain the same effects as those of the heat exchanger manufacturing method and the manufacturing apparatus according to the first embodiment, such as a high performance heat exchanger with a uniform fin pitch.

Embodiment 3 FIG.
FIG. 13 is an explanatory view showing a part of a heat exchanger manufacturing apparatus according to Embodiment 3 of the present invention. In the third embodiment, instead of using the cam member 123 and the cam follower 124 described above, the fin holding portion 121 is rotated by the servo motor 171. Other configurations are the same as those in the first or second embodiment, and the tube restraining portion 401 shown in FIG. 9 is provided.

  According to the apparatus for manufacturing a heat exchanger according to Embodiment 3 of the present invention, the timing at which the fin holding part 121 performs a motion to dodge the fin 2 inserted into the tube 1 as described later is arbitrarily controlled by the control of the servo motor 171. It is possible to obtain a high-performance heat exchanger that can be adjusted and has a uniform fin pitch by the operation of the servo motor 171.

  Further, while the fin is inserted into the tube, the restraining pin of the tube restraining portion restrains the tube from both sides thereof. Therefore, the fin can be inserted into the tube without causing positional displacement or deformation, and a high-performance heat exchanger with a uniform fin pitch can be obtained.

Embodiment 4 FIG.
FIG. 14 is an explanatory view showing a part of a heat exchanger manufacturing apparatus according to Embodiment 4 of the present invention. As shown in FIG. 14, the mechanism for connecting or disconnecting the pipe 1551 and the pipe 1552 does not use the first partition plate and the second partition plate as described above, but instead forms an electromagnetic wave on a part of the pipe 1552. A valve 172 is installed, the sensor 173 senses that the fin holding part 121 has reached the insertion position in the tube 1, and sends an electric signal to the electromagnetic valve 172, thereby forming a vacuum path composed of the pipe 1551 and the pipe 1552. Is to be opened and closed. Other configurations are the same as those in any of Embodiments 1 to 3, and the tube restraining portion 401 shown in FIG. 9 is provided.

  According to the apparatus for manufacturing a heat exchanger according to Embodiment 4 of the present invention, the timing of the start and end of suction of the fins by the fin holding part 121 can be easily finely adjusted, so that the apparatus can be easily adjusted. There is.

  Further, while the fin is inserted into the tube, the restraining pin of the tube restraining portion restrains the tube from both sides thereof. Therefore, the fin can be inserted into the tube without causing positional displacement or deformation, and a high-performance heat exchanger with a uniform fin pitch can be obtained.

Embodiment 5 FIG.
The heat exchanger manufacturing apparatus according to Embodiment 5 of the present invention does not hold the fins by vacuum suction, but uses an air main plug instead of the vacuum pump, and draws air from the suction holes in the fin holding portion. The fin is ejected and the Bernoulli effect is generated to hold the fin. Other configurations are the same as those in any of Embodiments 1 to 3, and the tube restraining portion 401 shown in FIG. 9 is provided.

  According to the heat exchanger manufacturing apparatus of Embodiment 5 of the present invention, fins can be held without using an expensive vacuum pump. Further, while the fin is inserted into the tube, the restraining pin of the tube restraining portion restrains the tube from both sides thereof. Therefore, the fin can be inserted into the tube without causing positional displacement or deformation, and a high-performance heat exchanger with a uniform fin pitch can be obtained.

Embodiment 6 FIG.
FIG. 15 is an explanatory view showing a part of a heat exchanger manufacturing apparatus according to Embodiment 6 of the present invention, and shows only the main part of the heat exchanger manufacturing method and manufacturing apparatus according to Embodiment 6 of the present invention. ing. Other configurations are the same as those in any of Embodiments 1 to 5, and the tube restraining portion 401 shown in FIG. 9 is provided.

  In FIG. 15, a plurality of tubes 1 are arranged on the upper surface of the second support member 1752 of the stage portion for holding the tube, and the length direction of the tube 1 is the direction in which the linear guide (see 141 in FIG. 4) extends. Placed to match. Moreover, these tubes 1 are mounted so that the major axis of the cross section thereof coincides with the vertical direction. A through hole 1700 is formed in the second support member 1752 corresponding to the position where the plurality of tubes 1 are placed.

  On the back side of the second support member 1752 of the tube holding stage portion, the fin attachment maintaining portion 200 is disposed. A plurality of fin pressing protrusions 201 that can pass through the through hole 1700 of the second support member 1752 are arranged at a front end portion of the fin attachment maintaining unit 200 with a predetermined interval. These fin pressing protrusions 201 prevent the fins mounted by pressing the fins mounted across the plurality of tubes 1 from being displaced from the mounting position of the tubes 1, as will be described later by the fin mounting maintenance unit 200. To do. Other configurations are the same as those in any of the first to sixth embodiments.

  FIG. 16 is a conceptual diagram showing a heat exchanger manufacturing method and manufacturing apparatus according to Embodiment 6 of the present invention. As shown in FIG. 16, a fin holding part 121 for holding the fin 2 and inserting it into the tube 1 and a drum 122 for moving the fin holding part 121 along a circular path are provided. In the seventh embodiment, the drum 122 is provided with six fin holding portions 121. Other configurations not shown in the drawing are the same as those in FIGS. 3 to 5 except for the second support member 1752 and the fin attachment maintaining unit 200 in FIG. 15 described above.

  The fin attachment maintaining unit 200 is rotatably supported by a shaft 211, and a cam follower 210 is attached to an end opposite to the fin pressing protrusion 201. The cam follower 210 is configured to slide on the peripheral surface of the fin attachment maintaining unit driving cam 300. As will be described later, the fin attachment maintaining unit driving cam 300 is rotated in synchronization with the rotation of the fin holding unit 121 by a driving device (not shown).

  17A and 17B are explanatory views showing the operation of the heat exchanger manufacturing apparatus according to Embodiment 6 of the present invention. FIG. 17A shows a state immediately before the fins 2 are attached to the outer peripheral surface of the tube 1, and FIG. The state when the fin 2 is attached to the outer peripheral surface of the tube 1, (c) is the state immediately after the fin 2 is attached to the outer peripheral surface of the tube 1, and (d) is the time when a further time elapses from the state of (c). Each state is shown. FIG. 17 shows only one of the six fin holding parts 121 for the convenience of explanation and shows the operation state.

  In FIG. 17, one fin 2 supplied from a fin supply part (not shown) is supplied to the fin holding part 121, and the tube insertion groove of the fin is U-shaped in the fin holding part as described above. The fin 2 is attracted and held by the fin holding portion 121 in a state of being superimposed on the groove. As the drum rotates, the six fin holders 121 are supplied with the fins 2 one by one sequentially at a predetermined time interval and hold them, and as the drum 122 rotates, the clock shown in FIG. The position shown in FIG. 16A is reached by the circular motion in the direction.

  When the fin holding part 121 holding the fin 2 reaches the position shown in FIG. 17A, a part of the tube 1 is inserted into the tube insertion groove of the fin 2 held by the fin holding part 12, and the fin holding part 121. It will be in the state fitted in the U-shaped groove. At this time, the cam follower 124 of the fin holding portion 121 is in a position in contact with or not in contact with the flat surface 1231 of the cam member 123, but is upright with respect to the peripheral surface of the drum 122. At this time, the fin attachment maintaining part 200 is at a position disengaged from the tube 1.

  Next, when the fin holding portion 121 reaches the position shown in FIG. 16B as the drum 122 rotates, the cam follower 124 of the fin holding portion 12 reaches the raised surface of the cam member 123 and the fin holding portion 12. The fin 2 held by the tube 2 is in a state in which the width direction thereof substantially coincides with the vertical direction, the tube 1 is completely fitted in the tube insertion groove, and the fin 2 is mounted on the outer peripheral surface of the tube 1. The

  At the same time, the cam follower 210 of the fin attachment maintaining unit 200 returns to the flat surface from the position where it is pushed up by the raised surface of the fin attachment maintaining unit driving cam 300, and as a result, the fin attachment maintaining unit 200 is centered on the shaft 211. 17 is rotated counterclockwise in FIG. 17, and the fin pressing protrusion 201 presses the fin 2 just mounted on the tube 1 from the right side of the drawing, and the fin 2 is brought into the mounting position on the outer peripheral surface of the tube 1. maintain.

  When the drum 122 further rotates clockwise from the state of FIG. 17B, the fin holding portion 121 is pushed up with the cam follower 124 coming into contact with the raised surface of the cam member 123, and the fin holding portion 121 By rotating in the counterclockwise direction around the moving axis, as shown in FIG. 17C, the tube 2 is separated from the fin 2 mounted on the outer peripheral surface of the tube 1. At this time, the fin attachment maintaining unit 200 keeps pressing the fin 2 attached to the tube 1.

  When the drum 122 further rotates and the fin holding portion 121 reaches the position shown in FIG. 17 (d), the fin holding portion 121 is further separated from the fin 2 attached to the tube 1, and thereafter As the drum 122 rotates, the drum 122 moves toward the top of the drum 122. Then, when the top of the drum 122 is reached again, new fins 2 are again supplied by the fin supply unit and held. At this time, the cam follower 210 of the fin mounting / maintaining unit 200 is pushed up by the raised surface of the fin mounting / maintaining unit driving cam 300 and is rotated clockwise to separate from the mounted fin 2 and the tube 1.

  As described above, according to the heat exchanger manufacturing method and manufacturing apparatus according to Embodiment 6 of the present invention, after the fin 2 is attached to the tube 1 by the fin holding portion 121, the fin holding portion 121 is removed from the tube 1. By avoiding (the state shown in FIG. 17C), the displacement of the fin 2 is suppressed, the deformation of the fin 2 and the disturbance of the fin pitch are suppressed, the ventilation resistance is reduced, and the performance of the heat exchanger is reduced. The heat exchanger which improved and suppressed the appearance deterioration of the external appearance of a fin insertion position can be manufactured. In addition, the fin misalignment correction work is eliminated in the subsequent process, and the production tact time can be shortened.

  Further, while the fin is inserted into the tube, the restraining pin of the tube restraining portion restrains the tube from both sides thereof. Therefore, the fin can be inserted into the tube without causing positional displacement or deformation, and a high-performance heat exchanger with a uniform fin pitch can be obtained.

Embodiment 7 FIG.
FIG. 18 is a conceptual diagram showing a part of a heat exchanger manufacturing method and a manufacturing apparatus according to Embodiment 7 of the present invention. In FIG. 18, the tube restraint portion 401 includes a plurality of restraint blocks 406 for aligning the tube pitch. Adjacent restraining blocks 406 sandwich and restrain the tube 1 from both sides thereof, and align the plurality of tubes at equal pitches in the tube width direction. The gap 4061 between the adjacent restraining blocks 406 is set slightly wider than the width of the tube, so that the tube restraining portion 401 can be easily attached and detached.

  Although not shown, the base plate 403 slides on the surfaces of the pair of guide rails 404 via the first guide 405 and the second guide, as in the case of the first embodiment shown in FIG. And it can move freely horizontally in the width direction of a plurality of tubes. Therefore, the position of the base plate 403 in the horizontal direction is corrected following the shift in the position of the plurality of tubes in the width direction.

  The tube restraint portion 401 configured as shown in FIG. 18 is always placed near the rear of the fin insertion position, and at a position where the fin holding portion 121 can be avoided without interfering with the operation of the fin holding portion 121. That is, as shown in FIG. 11 in which the installation range of the tube restraint portion 401 is indicated by oblique lines, the tube restraint portion 401 is always present near the rear of the fin insertion position, and the fin holding portion 121 is 121a, as will be described later. Even if it moves like 121b and 121c, it does not interfere with the operation | movement of the fin holding | maintenance part 121, but is installed in the position which can avoid the fin holding | maintenance part 121. Other configurations are the same as those in any of the first to sixth embodiments.

  According to the heat exchanger manufacturing method and manufacturing apparatus according to Embodiment 7 of the present invention, the tube is restrained by the restraining block, so that the contact area between the restraining block and the tube is increased, and the surface of the tube is increased. It is possible to achieve a special effect that damage such as scratching can be prevented.

Embodiment 8 FIG.
FIG. 19 is a conceptual diagram showing a heat exchanger manufacturing method and a part of the manufacturing apparatus by the heat exchanger manufacturing apparatus according to Embodiment 8 of the present invention. In FIG. 19, the base plate 403 of the tube restraining portion 401 includes a plurality of restraining grooves 407 provided side by side with a predetermined interval. Tubes are inserted into the restraining grooves 407, respectively, and a plurality of tubes are aligned at an equal pitch in the width direction of the tubes. The width of the restraining groove 407 is set slightly wider than the width of the tube, so that the tube restraining portion 401 can be easily attached and detached.

  Although not shown, the base plate 403 slides on the surfaces of the pair of guide rails 404 via the first guide 405 and the second guide, as in the case of the first embodiment shown in FIG. In addition, the plurality of tubes 1 can be moved horizontally in the width direction. Therefore, the position of the base plate 403 in the horizontal direction is corrected following the shift in the position of the plurality of tubes 1 in the width direction.

  The tube restraint portion 401 configured as shown in FIG. 19 is always installed near the rear of the fin insertion position and at a position where the fin holding portion 121 can be avoided without interfering with the operation of the fin holding portion 121. That is, as shown in FIG. 11 in which the installation range of the tube restraint portion 401 is indicated by oblique lines, the tube restraint portion 401 is always present near the rear of the fin insertion position, and the fin holding portion 121 is 121a, as will be described later. Even if it moves like 121b and 121c, it does not interfere with the operation | movement of the fin holding | maintenance part 121, but is installed in the position which can avoid the fin holding | maintenance part 121. Other configurations are the same as those in any of the first to seventh embodiments.

  According to the method and apparatus for manufacturing a heat exchanger according to Embodiment 8 of the present invention, the tube is restrained by the restraint groove, so that the contact area between the wall surface of the restraint groove and the tube increases, It is possible to obtain a special effect that damage such as scratches on the surface can be prevented.

Embodiment 9 FIG.
FIG. 20 is a conceptual diagram showing a part of the heat exchanger manufacturing method and manufacturing apparatus by the heat exchanger manufacturing apparatus according to Embodiment 9 of the present invention, and particularly shows the main configuration of the tube restraint portion. . In FIG. 20, the base plate 403 of the tube restraining portion 401 includes four rectangular recesses 4031 extending from the center X to both sides on both sides of the center X of the base plate 403. The four recesses 4031 on both sides of the center X are arranged in parallel with each other at a predetermined interval.

  The eight concave portions 4031 described above are connected by a central concave portion (not shown) formed along the center X so that the bottom surface is continuous in a planar shape. The central recess is open at the left end of the base plate 403 in the figure. Four concave portions 4031 extending on both sides of the center X are formed symmetrically with respect to the center X.

  The movable plate 408 includes a central plate body 4081 extending to the central portion, and four rectangular convex portions 4082 each projecting in a right angle direction from both side portions of the central plate body 4081. The thickness of the movable plate 408 constituted by the central plate body 4081 and the eight convex portions 4082 is formed to have the same dimension as the depth of the central concave portion and the eight concave portions 4031 in the base plate 403. . Further, the width W of the above-mentioned eight concave portions 4081 formed on the base plate 403 is set to be larger by the dimension T than the width of the above-mentioned eight convex portions 4082 formed on the movable plate 408.

  The central plate body 4081 of the movable plate 408 is inserted into the central concave portion formed in the base plate 403, and the eight convex portions 4082 of the movable plate 408 are inserted into the eight concave portions 4031 of the base plate 403. . The distal end portion 4083 of the central plate body 4081 of the movable plate 408 protrudes outside the base plate 403 from the open portion of the central recess of the base plate 403.

  As described above, since the width of the eight convex portions 4082 of the movable plate 408 is set to be smaller by the dimension T than the width W of the eight concave portions 4031 of the base plate 403, the movable plate 408 is arranged in the direction of the center X. Can be slid by dimension T. FIG. 20 shows a state in which the movable plate 408 has been slid to the right in the drawing.

  In the land portion 4032 adjacent to the concave portion 4031 of the base plate 403, four fixed restraining pins 407 are fixed and arranged in line symmetry with respect to the center X. Further, one movable restraining pin 4072 is fixed to each convex portion 4082 of the movable plate 408 one by one. As shown in FIG. 20, the fixed restraining pins 4071 and the movable restraining pins 4072 are alternately arranged in a line of four on both sides of the center X.

  Although not shown in FIG. 20, as shown in FIG. 9, a pair of first guides 405 fixed to one side of the back surface of the base plate 403 with a gap therebetween, and a first guide Similarly to 405, a pair of second guides (not shown) fixed to the other side of the back surface of the base plate 403 with a gap therebetween, and the first guide plate 403 are disposed corresponding to the back surface of the base plate 403. The guide 25 and a pair of guide rails 404 that slidably contact the inner side surface of the second guide. Other configurations are the same as those in any one of the first to eighth embodiments.

  The tube restricting portion 401 configured as described above is installed at a position indicated by hatching as shown in FIG. In this state, the tube 1 is inserted between the fixed restraining pin 4071 and the movable restraining pin 4072 respectively arranged on both sides of the center X in a state where it intersects the center X of the tube restraining portion 401 in a direction perpendicular to the center X. The As a result, the tube 1 is restrained by contacting the fixed restraining pin 4071 and the movable restraining pin 4072 on both sides thereof. In the ninth embodiment, four pairs of adjacent fixed restraining pins 4071 and movable restraining pins 4072 are provided on both sides of the center X, respectively, so that the four tubes 1 can be restrained in parallel. it can.

As described above, the movable restraining pin 4072 can slide with the movable plate 408 corresponding to the width of the tube 1. For example, if the distal end portion 4083 of the movable plate 408 is configured to slide on the cam surface of a cam (not shown), the movable plate 408 can be slid in the range of the dimension T by rotating the cam. Fixed restraining pin 4071 and movable restraining pin 4072
It is possible to arbitrarily adjust the distance between the two.

  Therefore, when the dimension of the width of the tube 1 of the heat exchanger is changed, the opposing distance between the fixed restraining pin 4071 and the movable restraining pin 4072 can be set by sliding the movable plate 408 by the rotation of the cam. It can be made to correspond. Thus, when it is set as the structure which can adjust the opposing space | interval of the fixed restraint pin 4071 and the movable restraint pin 4072 using a cam, the fixed restraint pin 4071 and the movable restraint pin 4072 can also be called a restraint cam follower.

  Since the plurality of movable restraint pins 4072 are integrally fixed to the movable plate 408, they can be simultaneously slid in the direction in which the center X extends, and the opposing spacing with the corresponding fixed restraint pins 4071 can be made the same. The width of the plurality of tubes 1 and the width of the tube insertion grooves 21 of the fins 2 can be kept perfectly appropriate. The arrangement pitch of the plurality of tubes 1 and the arrangement pitch of the plurality of tube insertion grooves 21 in the fins 2 Can be matched with high accuracy, and the degree of adhesion between the two can be further improved.

  Instead of using a cam, for example, the opposing interval between the fixed restraining pin 4071 and the movable restraining pin 4072 is stored corresponding to the model, and the movable plate 408 is slid by the driving device based on the stored information. Also good.

  According to the method and apparatus for manufacturing a heat exchanger according to Embodiment 9 of the present invention, as described above, a high-performance heat exchanger can be manufactured with high accuracy.

DESCRIPTION OF SYMBOLS 100 Heat exchanger 1 Tube 2 Fin 21 Tube insertion groove 22, 23 Slit 120 Heat exchanger manufacturing apparatus 121 Fin holding part 122 Drum 123 Cam member 124 Cam follower 174, 1741 Support part 126 Shaft 127 Coupling 128, 143 Motor 1241 Connection Plate 129 Rotating shaft 125 of fin holding portion 125 Torsion spring 156 Rotary joints 1551 and 1552 Piping 164 First partition plate 162 Second partition plate 1621 and 1643 Through long hole 151 U-shaped groove 154 Suction hole 1553, 1554 and 1555 Joint 161 Rotating part 152 Internal passage 157 Vacuum pump 140 Stage part 141, 1411 Linear guide 163 Fixing part 1632 Sealing member 142 Ball screw 1611, 1631, 1633, 1641 Through hole 1421 Nut member 1751 First support member 1752 Second support member 144, 1441 Air cylinder 1232 Raised surface 171 Servo motor 172 Solenoid valve 173 Sensor 200 Fin mounting maintenance portion 201 Fin pressing projection 1700 Through hole 210 Cam follower 300 Fin mounting maintenance portion drive Cam 401 tube restraint portion 402 restraint pin 403 base plate 404 guide rail 405 first guide 406 restraint block 4061 gap between restraint blocks 407 restraint groove 408 movable plate 4081 movable plate central plate body 4082 movable plate convex portion 4083 movable Plate tip 4031 Base plate recess 4032 Base plate land 4071 Fixed restraint pin 4072 Movable restraint pin

Claims (16)

A method of manufacturing a heat exchanger in which a plurality of fins are attached to the outer peripheral surface of a tube through which a fluid is circulated, with a predetermined interval in the length direction of the tube,
A moving step of relatively moving the fin to be attached to the tube and the tube in the length direction of the tube;
A fin attachment step of attaching the fins to the tube one by one;
A tube restraining step of restraining the tube so as to restrict the position in the width direction of the tube at least during execution of the fin mounting step;
Equipped with a,
The fin has a tube insertion groove into which the tube is inserted,
In the fin mounting step, the tube is inserted into the tube insertion groove while the fin moves circularly.
The manufacturing method of the heat exchanger characterized by the above-mentioned. A plurality of the tubes are juxtaposed at a predetermined interval in the width direction of the tubes,
There are a plurality of the tube insertion grooves corresponding to the plurality of juxtaposed tubes,
In the fin mounting step, the plurality of tubes respectively corresponding to the plurality of tube insertion grooves are simultaneously inserted, and the fins are mounted across the plurality of tubes,
The tube restraining step restrains the plurality of juxtaposed tubes, respectively, thereby juxtaposing the plurality of tubes while maintaining the predetermined interval.
The manufacturing method of the heat exchanger of Claim 1 characterized by the above-mentioned. A manufacturing apparatus for manufacturing a heat exchanger including a tube for circulating a fluid therein, and a fin attached to the tube by fitting a tube insertion groove to the outer peripheral surface of the tube,
A fin holding portion capable of holding a fin to be attached to the tube;
A tube holding portion capable of holding the tube to which the fin is to be attached;
A drive unit that relatively moves the fin holding unit and the tube holding unit in the length direction of the held tube;
A tube restraining portion that restrains the tube and can regulate a position in the width direction of the tube;
The fin holding portion holds the fin and fits the tube insertion groove to the tube to attach the fin to the outer peripheral surface of the tube, and sequentially performs the attachment corresponding to the movement. By mounting a plurality of fins on the outer peripheral surface of the tube at a predetermined interval, the fins move circularly so that the tubes are inserted into the tube insertion grooves while circularly moving,
The tube restraining portion restrains the tube so as to restrict the position in the width direction of the tube when at least the fin is attached to the tube.
An apparatus for manufacturing a heat exchanger. A plurality of the tubes are juxtaposed at a predetermined interval in the width direction of the tubes,
The fin includes a plurality of tube insertion grooves respectively corresponding to the plurality of juxtaposed tubes,
The fin holding portion is configured to simultaneously insert the plurality of tubes corresponding to the plurality of tube insertion grooves and to mount the fins across the plurality of tubes,
The tube restraining portion restrains the plurality of juxtaposed tubes to be juxtaposed while holding the predetermined interval when the fin is mounted across the plurality of tubes.
The apparatus for manufacturing a heat exchanger according to claim 3. The tube restraining part is
A base plate,
At least a pair of restraining pins fixed to the base plate and restraining the tube in both sides to restrict the position in the width direction of the tube;
The apparatus for manufacturing a heat exchanger according to claim 3 or 4, further comprising: The tube restraining part is
A base plate,
At least a pair of restraint blocks fixed to the base plate and restraining the tube in the width direction by restraining the tube on both sides thereof;
The apparatus for manufacturing a heat exchanger according to claim 3 or 4, further comprising: The tube restraining part is
A base plate,
A constraining groove that is provided on the base plate and inserts the tube to restrict the position in the width direction of the tube;
The apparatus for manufacturing a heat exchanger according to claim 3 or 4, further comprising: The tube restraining part is
A base plate,
At least one fixing pin fixed to the base plate;
At least one movable pin facing the fixed pin and capable of adjusting a facing distance to the fixed pin;
The apparatus for manufacturing a heat exchanger according to claim 3 or 4, further comprising: A plurality of the fin holding portions are provided,
The apparatus for manufacturing a heat exchanger according to any one of claims 3 to 8, wherein the apparatus is a heat exchanger. A drum configured to be rotatable around an axis, and rotatably supporting the fin holding portion;
A cam member;
A cam follower coupled to the fin holding portion and rotating the fin holding portion in contact with a predetermined portion of the cam member at a predetermined rotational position of the drum;
With
10. The fin holding part is separated from the fin mounted on the tube by rotating the fin holding part by the cam follower. The heat exchanger manufacturing apparatus described in 1. A drum configured to be rotatable around an axis, and rotatably supporting the fin holding portion;
A servo motor connected to the fin holding portion and rotating the fin holding portion at a predetermined rotational position of the drum;
With
10. The fin holding portion is separated from the fin mounted on the tube by rotating the fin holding portion by the servo motor. The heat exchanger manufacturing apparatus according to the item. The fin holding portion is configured to hold the fin by vacuum suction,
The apparatus for manufacturing a heat exchanger according to any one of claims 3 to 11, further comprising a partition plate provided in the middle of the path for performing vacuum suction and capable of opening and closing the path. . The fin holding portion is configured to hold the fin by vacuum suction,
Provided with an electromagnetic valve that can control the opening and closing of the path for performing vacuum suction,
The apparatus for manufacturing a heat exchanger according to any one of claims 3 to 11, wherein the apparatus is a heat exchanger.   The said fin holding | maintenance part hold | maintains the said fin by the Bernoulli effect, The manufacturing apparatus of the heat exchanger as described in any one of Claim 3 thru | or 11 characterized by the above-mentioned. A fin mounting maintenance unit that maintains the mounted fins at a position on the outer peripheral surface of the mounted tube each time the sequential mounting is performed.
The apparatus for manufacturing a heat exchanger according to any one of claims 3 to 14, wherein: Each time the fins are sequentially mounted on the outer peripheral surface of the tube in synchronism with the mounting of the fins by the fin holding unit, the fin mounting maintaining unit replaces the mounted fins with the mounted tubes. Configured to maintain a position on the outer peripheral surface of the
The apparatus for manufacturing a heat exchanger according to claim 15.

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